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Finding the Fourth Proportional to 140,992.52, 211,488.78 and 70,822.64

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Solution

The fourth proportional to 140,992.52, 211,488.78 and 70,822.64 is: 106,233.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,992.52 : 211,488.78 = 70,822.64 : x
  2. Step 2: Convert to fraction form
    140,992.52/211,488.78 = 70,822.64/x
  3. Step 3: Cross multiply
    140,992.52x = 211,488.78 × 70,822.64
  4. Step 4: Simplify right side
    140,992.52x = 14,978,193,729.98
  5. Step 5: Solve for x
    x = 14,978,193,729.98/140,992.52
  6. Step 6: Final answer
    x = 106,233.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.